Infrared ray equipment



2 Sept. 1950 R. w. LASHELLS 2,521,232

INFI RARED RAY EQUIPMENT Filed March 27, 1946 5 Sheets-Sheet 1 /6 L i W1INVENTUR. Falp% lWXdJieZZJ.

F Td/F/V Ki Sept. 5, 1950 R. w. LASHELLS INFRARED RAY EQUIPMENT 5Sheets-Sheet 2 Filed March 27, 1946 S p 1950 R. w. LASHELLS 2,521,232

INFRARED RAY EQUIPMENT Filed-March 27, 1946 3 Sheets-Sheet I5 INVENTOR.2722,; MJJZe 2Z6.

Patented Sept. 5, 1950 cmrs o PAJE'. ir1

INFRARERRA QU PM N 7.

Ralph WJIIasliells; Findlay; Ohio Application lvlmrchizq,194e,seriaitalicised v 2 Elaims. (01119 -3421) This invention,relates/to infrared.rayequip: merit and particularlyhtoathattype thereof inwhichinfraredrayflamps are arranged injoanksj,

so as vto idirect theerays. therefrom upon an obe.

jGt%,tQ- heireated. thereby, the ,princ-ipal "object beingsrtheprovision ofa construction.including a minimu-lr-i1- number, ofstandardrparts so con; structed and arranged. as to permit banks of,

infrared? lamps; .of: various. sizes and shapes :to be:;cons,tructedevtherefromp-at a ,minimum of; ex Den e- Objects nof thevinvention include the provision of laacenstrocticn of mounting aplurality. ofj in .2 frared, lamps in banks-including. parts whic may-,ibecutrto length and/or employed. in"m'l l1f; tiple,-- to produce;aebankof infrared, ray lamps ofrian-y' desired size, andfi shape ;.lthevprovision of I a construction as; abovedescri-bed in which the,inirared-erayvlamps; are-:arranged in, rows and;

each roW has a single reflector asseeiated therewith; common to allofthe, lamps: of such row;

the provisiont of a constructiom as above f-described in,-which thefrarneworhmof a bankjinicludes send: frame assemblies, "of standard: sectioneinter'connected b cross members which. are

formedtol providet conduits me the Wiringame played for? energizing thel 1 lamps; i th r p i i n ofea construction= asaabove Tdescribedincluding certain, standard partsand/or, sections, capable ofsbeing usedin .the construction of a bar-1k :of, a

infrared ray lamps regardlessof the sizeo sh'ape, ofatherbank; and',theprovision. of. a z on tr ca tion as above described that.-is,.-simple.incon:

struction, eflicient in; operation, and economical toimanufacture" h It7111;; o flcoursa be appreciated that; varia uia urine pla tsproducearticles-0f;

The above :vbeing amon the. objects oi the,

present inventien the, same consists in .oerta' novel. features, ofconstru tion and comb nations? 8 of ,partsv to" be; hereinafterdescribed in reference t0,t1i8 ,aCCOmpaI1ying"dllaw s, an theniclaimeihavingji-ithe ,abov'e and] other objects in view.

In the a'ocompanying drawings which illustrate. suitable embodiments, ofthe, pre ent n vention andlinr-whichilike numeralsureter'. ool k parts.throughout ,the several odifierent views, I

Fig. 1 ,is anve'nd' view oftwo banks-of, infra- 7. red" .ray lampsconstructed inv accordance with thecpresentinvention and .iarranged in0ppOSBdL relation .with respect to each;v other whereby ,to;

form an oven-likestructure through which ar ticlesitosbe, heatedthereby. may be, passed,

Fig. ;,2isa-Mrearl quarterperspective view off.v one; of the banks-,-oilinfrared ray, lamps, shQWIL inlFigfi 1 etc better. bringv.outthe?construction thereof i Bis; a v frag'rrlentary perspective viewilljus trating' a modifiedf form of construction for a;

part of the strilctur e shovm injFi'g; 2;

Fig. 4i s' an enlarged; partiallyf broken'; perspective view takenlookingflingthesame di rectiorr asf in FigLZ 'an'd showing onejofthere'- flecto'rs', thej associated horizontal and vertical?" conduitiorming' menrhers, andf fragments-of as?vsociated;partsineigplodedqview,

Fig; 51s, a" still further emargeaif ent ly,"

per'spect eii viewtaken in, the ame direction; as; in; Fig and 4' i1lustrating in greater detail"the con n -Mat the e iof"thelioriz ntal ,1c01i-; waits and? the-various; attaching means therefor,' and anienlargeditrfl sverseg sectionaliview take pen" the liIie 66 of Fig, 2 through oneof thefihorizontal conduitsand the associatefre fleic rE a a In infraredrayf lamp equip'ment it, is ,conven';

tio'nal practice to-' provide 1 banks of infrared rayj, lalnps each bankin thelform of a unitinclud v ingf rsupportingmeansforapluralityfofi'inf red ray; lamps and; reflectors" associated there 1with: Thearrangementisthat two suchhanksorj un'it's' ofilarnps" may b'earranged in spaced but oppbsed rel'ationshib;with respect to each9the'r;1 origo'pposite Sides'ofthe path of movementlof worktherehetweenso as to]form; in'efiectianf he'ajted'hy' the-infrared ray lamps inorder; to"

have some resulting efieot; as for example, the dryingo'fia coat ofpaint or enamel with whichthef vvork has been provided with.

w1dely varying sizes and shapes; which may dsir-ably Ue'p'rofces'sedIbjihfi'iii'd ra'y lamps and" that the -ba'nk's of lamps in each case mayvary in' size and shape from those required lor gdesiredf, other cases;If-differentparts'areQrequiredf; for each different size and shape oflth e bank offinfi-a-red ray lanips requir'ed in each case, tlien I itwilPbe" appreciated that the ultimate costto theuserwill ldefliigher'than if'this werenot ne essarygf and ;thei' manufacturer of*suchgbanksiof lamps wfillbe requiredito, carry a greaterjinven tory1oipartsthan" if this" were not the case;

Aic'cordin''g; 1y,j it" is' desirable inthe manuiactu're '1 of? suchbanks. of infrared y a p thatem, bank'"or;unitiheformed of standardparts adapteable for use in anyunit regardless-of the size;

or; shape thereof) and j standard' structural or other sections Whichm'ay'fcome. in relatively ex v rnzli ,2l n t s. o'i tra ey r quire; 6-;

ing adapted to banks or units of different sizes and shapes, is to becut to the required length. The invention relates to the latter type ofstructure and, because of its design, it is believed to be particularlyefiicacious in producing infrared ray banks of lamps or units at aminimum of expense, it makes it possible for such banks or units to bequickly and readily fabricated, and it produces a highly efficientapparatus.

Referring now to the accompanying drawings, each bank of lampsconstructed in accordance with the present invention includes a pair oflaterally spaced end frames preferably formed from a standard structuralsection such, for instance, as the angle iron sections shown in thedrawings. In the broader aspects of the invention, it will, of course,be appreciated that the method of supporting each bank of lamps is moreor less unimportant, but it has been found desirable that such banks oflamps be mobile, and for that reason the end frames in theconstructionsshown are provided with caster wheels for movably supporting the samefrom a floor or other supporting surface.

The shapes of the end frames will, of course, vary with the desiredcross-sectional shape of the bank formed in each case to conform to thesize and shape of the particular object or class of objects which thebanks of lamps are intended to treat. In the particular case illustratedin Fig. 1, it is assumed that the object to be heated is a relativelyelongated object such as indicated at II! in Fig. 1, of generallyrectangular configuration and which, as a matter of illustration, may betreated by passing it between a pair of opposed banks of lamps such asillustrated in Fig, 1 as by means of a monorail conveyor indicatedgenerally at I2. In the case shown in the drawings, it is assumed, byway of illustration, that the object I is of such size that each bank oflamps desirably include siX rows of lamps so arranged so as to projectthe rays therefrom not only upon the sides of the member I 0 but alsoupon the top and bottom surfaces thereofj Accordingly, this arrangementdesirably includes the four center rows of lamps arranged to project thelight therefrom laterally in a generally horizontal direction againstthe corresponding side of the object I0, and the upper and lower rowsarranged to direct the light therefrom downwardly and inwardly, andupwardly and inwardly, respectively, so as to project the rays therefromagainst the corresponding top and bottom surfaces of the object I0. Withthis in mind and appreciating that the framework to be described isarranged in this particular case to obtain this result, the modificationof such framework to vary the arrangement of the various rows of lampsto conform them to any desired size or shape of object will be readilyappreciated by those skilled in the art.

In adapting the present invention to the set of circumstances abovepointed out, each end frame member of each bank comprises a verticallydirected angle iron element Marranged with one flange thereof parallelto the general plane of the bank and the other flange thereof directedrearwardly from the outer edge of the first flange. The angle iron I4 atits lower end is rigidly fixed as by welding or the like to a relativelyshort horizontally directed angle iron I6 arranged with its lengthperpendicular to the general plane of the bank. The angle iron I6 is ofidentically the same section as the angle iron I 4, and to each of itsopposite ends is suitably secured a caster wheel assembly indicatedgenerally at I3. The angle iron I4 is substantially longer than thedesired vertical spacing of the four rows of horizontally directed lampsto be employed, and adjacent its lower end an angle iron member 20 isextended between it, at a point spaced upwardly from its point ofconnection with the member I6, to the member I6 at a point spacedlongitudinally thereof from its point of connection with the member I4,and the member 20 is suitably secured to both the members I4 and I5 inany suitable manner, as by welding or the like. It will be noted thatthe member 20 is arranged with its length perpendicular to the planeincluding the axes of the lower row of lamps, this being for a purposewhich will hereinafter be described. Additionally, an angle iron member22 is suitably secured, as by welding or the like, to the upper end ofeach member I4 and extends upwardly and inwardly therefrom and alsoperpendicular to the plane including the axes of the upper row of lamps.As will be appreciated, the members 20 and 22 are required only toaccommodate corresponding rows of lamps which are directed at adifferent angle than the lamps arranged with their axes perpendicular tothe plane of the front face of the members I4.

The above described simple structure is all that is necessary for eachend frame and it will be understood that all elements thereof except thecaster wheel assemblies I8 are formed from standard structural sectionssimply cut to length, and/or shaped where required, and welded orotherwise suitably secured together. In the particular case shown, allthe members are shown as being formed from the same size and shape ofstructural elements, although this is not essential in the broaderaspects of the invention even though desirable.

The end frames thus described are connected together in pairs by meansof a plurality of interconnecting horizontally directed cross members30, each centrally arranged with respect to a plane including the axesof a correspondingly desired row of lamps. As best brought out in Fig.4, each member 30 is formed from sheet metal into a channel section, theopen side of which is directed rearwardly. All of the members 30 areidentical to each other in size, shape, and configuration, and arepreferably simply cut from relatively long lengths of such section whichmay be kept in stock.

In order to secure the ends of the cross members 30 to the end framemembers, each end of each cross member 30 is provided with a mountingbracket best brought out in Figs. 4 and 5. As brought out in Fig. 5,each mounting bracket comprises a rectangular plate 32 of the same sizeas the internal dimensions of a cross member 30, and is provided withlaterally turned flanges 34 along the three edges thereof, all turned inthe same direction from the plane of the plate 32.

Along the fourth edge a laterally directed flange I ..fiange 36 in theplane of the open side of the member 30 and directed away therefrom, and

seem-232 a they;are suitably secured in placeeintanyr'ssuitt-tz 6vertically aligne the; corresponding; 'channela;

membersiflrmay adjacent: channel; members 1.1: 50ri if desired; or 1,Wheretlieimembers: BUfare; all 'iidenticalras shown,

short?- angularly; sectioned :lengthspf such zohan-r nelsmay;-berrinterposedzvbetween, the resulting;

spacediends of? theiaangularly "disposed: channels and sfth'er ends of?the: next.- adja cent ichannelL Pref ablmrhowever, andst'as;broughtrvout in g-Fig;

2, iti'is simplerrandi cheaper merely to,extendithetpieeetofsflexibie:tubing160 between :an endmfeach such."-angularly*disposedxchannel SKI-wand the adjacent' end .of'sth'eznextadjacent channel '56, the:

threaded end of-"a-lamp; indicated917442.?Thus}?clfitfoppositesendsofstheflxible tube? Ell b'eingrconthemembers 36 notonly serve as. cross a members;

for -the framework for: each? banki orz unihx, buttalso :serve asreceptacles: f or the; sockets-:4 ll= iandv thewiring; afragmentfofrwhichiis showni=andirre dicated at '44iin Fig. 4; and alsoillustrated in; Figrb? order -to connect the wiring:within eachr crossmember 30;with that in-zeaeh:other-crossrmember; each cross member 30,as :best. brought out in Fig. 4,-'int'ermediate its endsandzpreferably253. memberv3ll :and tel close the: operrv sides thereef,.

centrally thereof r as shown; is providedrl'witht' at; short lengthof-vertically directed channel Shear ranged with' its open: side facing.rearwardlysthe:

same as:the--channel's 3l In fact, the channels:

ventional-ly rsecuredrirr the corresponding. openingsiswioff the:channels: J

The open Asides-ruff the: channel: sectioned "cross members' '3flflandjthezopenr-sides of; the channels vided' ith: a -:channel:'sectionedjcover: 62;: adapted to. fitaover. theeuppers andrflowerwalls-of each;

andithey may be; removably' secured in placeain any; suitable mannerasvbyscrews 153i 7 Similarly, eachzchannel Sfiiisprovidedi'with :acorresponding cover: lil wvhich-mayc be removably secured there 50 arepreferably formed: by cuttingaofi fcorre -e-aoi' to irranysuitablelmannerzasibyrscrews165.,

spondihg lengths of the same stock from :whicha the-channel "crossmembers 3E8 are formed from: v

The-upper and lower walls of: each cross-member 3ll""are notched out= toreceive the corresponding cross members 30 at' the point which theyzare'notched" to receivethe corresponding channew member 509a flanged platemember 5'2ris insertedm between i the upper and? lower- Walls .of"eachwrossf-x member 3%) at each-sidewf' the c p o fi lflconnection:therewithit may be desirable insorne therein for: the channelmember 5ill 7and'i in'r-flush' n relatiorr with respect :to: the sides"of the notchiu and "is suitably fixed? thereto: r Each p1'ate mem-. ber*52 is provided withanopening 154 therein aligned-with a similar openingin the side wall 45 of the--corresponding channel mernberr'5fl"'so as topermit the projectionof the wiring: Me in reach it cr0ss membcr"3ll on'either sideoffthe corre-.-

sponding channel 5 ll to 1 within the correspondingar 'Il'iiis;eachrcrossf member 3313;!)(14135'00781 62 and teach channel ajmember; 50and :its cover 64 form' a.--closedr:conduitrinwhich the wiring :of thevaricnsrlampsrflzfis enclosechiand; protected and? channeb fifithereinrIn- 0rder-to'reinforceisthe 3511' additionally thei cross.-membersr3land their:-

covers flirfo'rm' arec'eptacle. or enclosure for the":

various SGCKQtS' AOIL.

Instead of iernploying :channel members such as 5ll 'of th'e lengthshown'in Figr2and=described in casesrto make the channels :56 of: theshorter length; as?for instance;illustrated at 56a in Fig; 3,

with such channels being otherwiseiddentical to spacedffitom' 'oneanother and 'in'isuch case short lengths or fie'xible tubingclilm,.of'itheisame' generalcharacter as :the flexible tubingfiil previouslychannel 501- If desired, conventional 'nipplesr-'orrnmrd i nb employs-d2t nn t the bushings may "be projected through ith'ese opene ingstoprevent cutting ofthe wiringxM by.=the=- sharp edges-thereof asWellasto serve as'a-:-means for securing each channel 50 to" itscorrespondingoppos'ed' 'ends of adjacent channelu membersfiila, all-asbrought: out in Fig; 3: The-result is; of course, =substantially the'same. in bothacasesvalthough Where the ends of, the: channelslabut eachfeeted-in any ethersuitabl ma-nner; The" chan-- nels 50 are, as broughtout in Fig. LpreEe'rably provided with end *rnembers 5li suitably'forrned andfiXedwi-th respectthereto, such end members:

lustrated in Fig. 2, itirnay'raidfiin"afford'ingzthe" structure someadditional rigidity:

New in banks of' infraredray 'lampssof" the: type described,- it-isdesirable; and particularly being provided 'with openings 58 1i)!"the'palssaige fleiilso wliere tl'ievlj nps employediareagf t type:

of the wiring M therethrough.

Asbest brought out' in Fig. 2; the --channels" 5llf preferably--projectan equal amount above and? below theh corresponding crossmembers 30 andprovide some-means for reflectingtthe rays from? the lamps in properlydiffused relation upon-the worlii and preventing. the 1 raysr rfromfbeingpro= they are-preferab y ofsucl lngth that Wherrtheflfiijected in a direction which willihave no utility.

cross members 341 are -assembledin-verticallyspaced relationship'to'eachother, as -to the-end framemembers M} their opposed ends abut" eachother'as indicated and in' whicli case=co1r-- In the 1 present case, thereflecting means I em? ployed consists oi atr'oughelike' memberindicated generally at' l 01 one: reflectors r! l] zbeingprovidedforeachrow=of lamps 42J Each refiector mils r ventional-bushings ornipples" may be-projected l of a length equal: tothe-distancebetweerrithe-i end frames' of the device and, as :brought-out:v in Fig. each comprises a substantially fiatiine ner 'wa'll l2:and azlpair 'of' f opposite outwardly diverging substantially" flatside-Walls It? the lat the upper"and lower members 30 which arenot terprefrably terminatingat tl'ieir free end's ina e1 fcrmed fscrasto?extend into? contacting:.relationshipi' withrrespect'; to the: nextw5li-aarez preferably.closed, and :xfor; that; purpose eachchannelfsectioned cross-t member 331cm each; sid'erofritsacorresponding'crossehannel 50 is pro the stem of each lampprojects, and each reflector- !8- is mounted with its centrallongitudinal plane including the axes of the lamps 42 for thecorresponding row. Preferably, the side walls 14 are arranged inoutwardly diverging relationship with respect to the central plane ofthe reflector and corresponding lamps 42 at an angle between 30 and 45as by this arrangement certain advantages in the reflection of the raysfrom the lamps 42 is obtained, as brought out in detail in my copendingapplication for Letters Patent of the United States on the same subjectmatter as the present application, filed on even date herewith, andserially numbere 657,395 now Patent Number 2,497,676. 1

Preferably, but not necessarily, the reflectors 19 are formed fromrelatively thin sheet aluminum having a specular finish providing areflectivity of in the neighborhood of 80% or better, as such materialhas been found to be ideally suitable for use as such reflectors and,additionally, when formed from suitably thin sheets it is such as topermit the side walls"! to be bent with respect to the inner wall 12,and the flanges l bent with respect to the side walls 14, toreadilyadapt them to varying spacing of the rows of lamps 42, to varyingangular relationship between adjacent reflectors l0, and to meet otherconditions as will be readily understood by those skilled in the art. Itwill be understood, however, that the reflectors H! are preferablyformed to a standard section and in relatively long lengths so that inbuilding up a bank or unit all that is required is to out such longlengths into the shorter lengths required in any particular installationand, if necessary, bend the side walls 14 with respect to the innerwalls 12, and/or the flanges T6 with respect to the side walls M; toaccomznodate them to the particular arrangement of parts being produced.

Preferably, the spacing of the rows of bulbs 42 is such that theadjacent flanges T3 of adjacent reflectors Hl overlap each other asbrought out in Fig. 1 in which case the overlapping flanges 75 arepreferably secured together as by sheet metal screws or the likeindicated at 80. Where as in the case of the reflectors for the upperand lower rows of lamps 42 in the arrangement shown in Fig. l the angleof the inner sideof the reflector is substantially'the same as theflange '16 on the next adjacent reflector 10,- then and as in the caseshown the first fiangemay Ibe simply removed if desired. l

The reflectors 19 are mounted in the manner shown, each from itscorresponding cross member 30, and this is accomplished by fixing to theupper and lower face of each cross member 30 at each end thereof aforwardly projecting sheet relatively wide leg 88 is fixed to each upperand lower face of the member so. Each leg 88 'is centrally notched, asbrought out in Fig. 4, to fit around the corresponding channel 50, andthe legs 88 thus serve to reinforce the channel 30 where it is cut outto receive the corresponding channel 50. As in the case of the legs 82,

the forward end portions of the legs 88 are laterally outwardly flangedas at SI] and are similarly secured to the rear walls 12 of thecorresponding greflector 10. Thus, each reflector is mounted upon itscorresponding channel 30'.

The last described feature is desirable inasmuch as in building up abank or unit of light the various channels 30 which are to beemmidployed therein including all of the auxiliary associated parts maybe built up as complete subassemblies and then applied as such to theend frames of the bank or unit. For instance, in such case and referringto Fig. 4, each such subassembly may comprise a channel member 30 andits corresponding channel member 50, the corresponding reflector 10secured thereto by the corresponding legs 82 and 88, the correspondingmounting brackets 32 and brackets 52, covers 62 and 64, the varioussockets 40 and the wiring therefor if desired. By this method ofassembly, relatively small units are provided upon which the bulk of thework may be easily and quickly performed after which thesesub-assemblies may be simply assembled together and to the end frames toproduce the final product. It is important to note that the end framesincluding the members I4, I6, 20, and 22 all comprise suitable lengthsof the same standard sectional material so that regardless of the sizeor shape of the bank of lamps to be constructed only one size of thestandard structural element is required to be carried in stock and to beavailable; Likewise, the cross members 30 and channels 50 are all formedfrom the standard section so that regardless of the shape or size of thebank of lamps to be constructed, they may be formed by simply cuttingoff suitable lengths of such stock and properly forming such cut oil"lengths if and as required. The covers 62 and 64 are likewise formedfrom a standard section and may be provided by simply cutting offsuitable lengths of stock of such section. The brackets 32 and 52 are ofthe standard size and may be employed regardless of the'length of thebank of lamps to be constructed, and the legs 82 and 88 are standard insize and shape and the reflectors 10' are of a standard section.Accordingly, by employing a relatively small number of standard sectionsfor the various elements of a bank of lamps constructed in accordancewith the present invention, and the small number of standard brackets orthe like, substantially any desired size and/or shape of infrared raylamp bank or unit may be quickly and economically constructed and withthe result that a highly efficient device is provided.

As previously mentioned, it is common practice to mount a pair of suchbanks or units of infrared ray lamps in opposed relation to each otheras brought out in Fig. 1 so as to form, in effect, an infrared ray oventhrough which articles such as the article l0 may be passed by anysuitable means as, for instance, the monorail conveyor [2 for treatmentby the lamps. In such installations, because of the high degree of heatgiven off by the lamps, some arrangement is desiralbly provided forprotecting the wiring for the lamps against the deleterious effect ofsuch heat. Where such banks of lamps are constructed in accordance withthe present invention then, as brought out in Fig. l, the reflectors l0serve to shield the conduits for the wiring, namely the cross members 30and the channels 50, from direct reception Of all except a minor portionof the rays from the lamps 42. The cross members 32 and channels 52'are, however, spaced rear wardly from the reflectors i0 and areconnected thereto only by the legs 82 and 88, which, being relativelynarrow as compared to the length of the reflectors and being relativelythin, provide only relatively small and limited paths for the conductionof heat directly from the reflectors "ill to cross members as andchannels 50. In other words, it may be said that the legs 32 and 68 formpaths of low heat conductivity between the connected members so that theheat absorbed by the cross members 30 and channels 50 will be mainlyabsorbed by convention and/or radiation of heat from the reflectors l9.However, in view of the fact that the cross members and the channels 50are spaced rearwar-dly from the reflectors iii, a free path is providedfor the flow of air upwardly over the rear faces of the reflectorsbetween the reflectors and the cross members 38, and over the crossmembers 30 and the channels 50. This provides an efficient means forcarrying off the heat from the members forming the conduits for thewiring and consequently prevents these conduit forming members fromreaching a temperature detrimental to the wiring contained therein. Thislast mentioned flow of air is indicated by the arrows 90 in Fig. 1.

Furthermore, in' arranging a pair of such banks of lamps in opposedrelationship, as illustrated in Fig. 1, the two banks will be arrangedin opposed relation with the opposed edges of the upper and lowerreflectors 1 01 in spaced relation with respect to each other as shownand as is necessary particularly where the work such as I dicated by thearrows 92 in Fig. 1, then upwardly Q between the two banks of lamps 42and then escape from between the opposed edges of the two upperreflectors. This provides a natural draft of air upwardly between thebanks'which is particularly advantageous where the work Ibeing performedis the drying of a paint or enamel coating on an object, or the drivingoff of some volatile substance from the work, as in such case fresh airis continuously supplied which more readily absorbs and carries off suchvolatile substance.

Havin thus described my invention, what 1 claim by Letters Patent is:

1. Infrared ray equipment comprising, in combination, a pair oflaterally spaced and vertical ly directed end frame members, a pluralityof vertically spaced horizontally extending cross membersinterconnecting said end frames, said cross members each comprising achannel sectioned member arranged with the open side thereof facingrearwardly, the forward wall of each of said cross members beingprovided with a plurality of laterally spaced openings therethrough, aplurality of lamp sockets within each of said cross members securedthereto one in line with each of said openings, wiring disposed in thechannel of each of said cross members interconnecting said sockets,vertically extending conduit means interconnecting said cross membersincluding a plurality of relatively short channel sectioned members,each arranged with its open side facing rearwardly, the upper and low erwalls of or said cross members being nctched out to receive one of saidchannel sectioned conduit members and each one of said cross membershaving one of said channel secticned conduit forming members fixed withrespect thereto, removable means closing the open sides of said crossmembers, removable means closing the open sides of said channelsectioned conduit means, a plurality of vertically and hori zontallyspaced legs fixed to each of said cross members and projectingforiwardly therefrom, a generally trough shaped reflector of approxi-,ateiy the same length said cross members rranged in forwardly spacedrelation to each of said cross members, the reflector corresponding toeach of said cross members being fixed to the forward terminus of saidlegs for the corresponding cross member and arranged with the channelthereof opening away from said cross member, and each of said reflectorshaving an opening in a rear wall thereof in line with each opening inthe corresponding said cross members.

2. An assembly unit for infrared ray equipment comprising, incombination, an elongated channel sectioned member having a plurality oflongitudinally spaced Openings in the bottom wall of the channel, aplurality of lamp sockets fixed to said member within the channel,thereof, the side walls of said channel being notched out between theends of said member, a relatively short channel sectioned elementreceived in said notch with its open side opening in the same directionas the open side of said member and fixed thereto, said elementprojecting beyond opposite sides of said member, wiring in the channelof said member interconnecting said sockets, said wiring extending intosaid element, a trough shaped reflector of substantially the same lengthas said member arranged with the bottom of the trough in opposed,parallel and spaced relation to said bottom of said channel, said bottomof said trough having openings therein one aligned with each of saidopenings in said member, and means extending between and secured to saidmember and said reflector connecting them into a unitary structure.

RALPH W. LASHELLS.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,400,859 Brown et al. Dec. 20,1921 2,042,855 Merklein June 2, 1936 2,263,866 Barber Nov. 25, 19412,317,426 Wilson Apr. 27, 1943 2,355,459 Miskella Aug. 8, 1944 2,419,643Hudson Apr. 29, 1947

